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It's not really a good idea but you could use your VIOS server because you could use the "mkvt" command to access the system consoles. The other option is to attemp to use the IVM (web) interface of the VIOS server, however I am not sure if it is supported on a 740, and there are limitations on what you can do compared to a HMC.

mkvt doesn't work if the hmc has the control, the vios has to have the control of the service procesor in order to mkvt work, so unless you have an ivm installed instead of hmc i don't think you can do much.

My experience having ivm and moving to ivm, its a problem i couldn't find a way to migrate the profiles.

I agree but I think he said he had no HMC but the system was already paritioned, and assuming I read the question correctly, he should be able to effectively delete the HMC control/association, using the fromt-panel.
I have done this to remove control from a test system that had been attached to a test system, and cannot remember exactly which buttons to press, but it does work as I did it, and now use IVM.
The official IBM documentation says that a system should "forget" it's HMC after two weeks, or something like that?
The only problem I had with IVM is that sometimes you have to rename the /etc/resolv.conf before the web interface works.

I have installed a P740 server with help of HMC, configured duel VIO setup and 4 LPAR.

Now the other team(Not having piece of knowledge on AIX) disconnected the Managed Box from HMC and moved to different location without my knowledge.

Now they have powered on the server and when LPAR didn't came up they called to me.
Now they want to activate the LPAR. I don't want to help them but an AIX admin I need to search a way to do it. :(

Question1 : I am not sure IVM can be accessed as there is no option to power on the VIO, as well I am not sure whether IVM installed and configured by default or we need to configure it manually after installation.

Question 2: Can we install VIO a fresh managed box and create LPAR with IVM? as I have heard that IVM is only for blade servers.

How about this. Get a new HMC for this location from a reseller. Depending on where you are you should be able to get one by morning. Install the software or have it come with the software already installed. Configure it for your site and add a managed system. It should take you less than 4 hours once the hardware is in house. Everything is still on the server, it just needs to be discovered by an hmc on the same network as its SFP.

IIRC, the managed system, ASMI, gets an IP from a DHCP scope defined on the HMC, so if you need to attach via ethernet, you first need to know the subnet and IP the ASMI card has, then you need to know what the ID/Password is to login.
You can get the IP from the display panel, but you can't get the admin password.
If you fail the password more than 3 times in a row, you lock out the account from the card and have to get IBM to come in and reset it, which then causes more issues.
You are best off getting the HMC shipped to the new location and plugging it in, if you break it trying to 'fix' the situation, it wont matter if you move the HMC later or not...
Perhaps log a ticket with IBM and have an IBM engineer attend site and perform the task for you while you wait for the HMC to get shipped.
Even if you get another HMC, you will still need the password to add the managed system, lock it out and your in trouble...

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